From: Jan Svitok <jan.svitok@...>
Date: 2007-03-15T23:42:21+09:00
Subject: Re: question about mod_ruby, eruby and ajax

On 3/15/07, Fei Liu <feiliu@aepnetworks.com> wrote:
> Jan Svitok wrote:
> > On 3/14/07, Fei Liu <feiliu@aepnetworks.com> wrote:
> >> Hi Group, I have a question about eruby. I keep getting the following
> >> error. I get the same error in apache error log when I try to view it in
> >> firefox. How do I fix it:
> >>
> >> eruby pique.rhtml
> >> pique.rhtml:1: undefined method `form_remote_tag' for main:Object
> >> (NoMethodError)
> >> --- generated code ---
> >> print(( form_remote_tag :url => { :action => 'whet' } )); print "   \n"
> >> print "Enter your name: "; print(( text_field_tag :name )); print " \n"
> >> print(( submit_tag "Greet Me" )); print " \n"
> >> print(( end_form_tag )); print " \n"
> >> print "<h2 id=\"greeting\" style=\"display: none\"></h2>\n"
> >> ----------------------
> >>
> >> Installed RPMS (on FC5):
> >> eruby-libs-1.0.5-5.2.1
> >> ruby-devel-1.8.5.2-1.fc5
> >> ruby-irb-1.8.5.2-1.fc5
> >> ruby-1.8.5.2-1.fc5
> >> ruby-mode-1.8.4-8.fc5
> >> ruby-rdoc-1.8.5.2-1.fc5
> >> eruby-1.0.5-5.2.1
> >> ruby-libs-1.8.5.2-1.fc5
> >> rubygems-0.9.2-1.fc5
> >>
> >> eruby]$ more *
> >> ::::::::::::::
> >> pique.rhtml
> >> ::::::::::::::
> >> <%= form_remote_tag :url => { :action => 'whet' } %>
> >> Enter your name: <%= text_field_tag :name %>
> >> <%= submit_tag "Greet Me" %>
> >> <%= end_form_tag %>
> >> <h2 id="greeting" style="display: none"></h2>
> >> ::::::::::::::
> >> whet.rjs
> >> ::::::::::::::
> >> page[:greeting].hide page[:greeting].update "Greetings, " + params[:name]
> >> page[:greeting].visual_effect :grow
> >> page.select("form").first.reset
> >>
> >>
> >> more mod_ruby.conf:
> >> # ClearModuleList
> >> # AddModule mod_ruby.c
> >>
> >> <IfModule !mod_ruby.c>
> >>   LoadModule ruby_module /usr/lib/httpd/modules/mod_ruby.so
> >> #  AddType text/html .rhtml
> >>   AddType application/x-httpd-cgi .rhtml
> >>   RubyRequire apache/eruby-run
> >>
> >>   # Execute files under /ruby as Ruby scripts
> >>   <Location /eruby>
> >>   SetHandler ruby-object
> >>   RubyHandler Apache::ERubyRun.instance
> >>   </Location>
> >>
> >>   # Execute *.rbx files as Ruby scripts
> >>   <Files *.rbx>
> >>   SetHandler ruby-object
> >>   RubyHandler Apache::ERubyRun.instance
> >>   </Files>
> >>   <Files *.rhtml>
> >>   SetHandler ruby-object
> >>   RubyHandler Apache::ERubyRun.instance
> >>   </Files>
> >> <Directory /home/devel/public_html/eruby>
> >>     Options ExecCGI
> >> </Directory>
> >> </IfModule>
> >>
> >> gem list:
> >> *** LOCAL GEMS ***
> >>
> >> actionmailer (1.3.3)
> >>     Service layer for easy email delivery and testing.
> >>
> >> actionpack (1.13.3)
> >>     Web-flow and rendering framework putting the VC in MVC.
> >>
> >> actionwebservice (1.2.3)
> >>     Web service support for Action Pack.
> >>
> >> activerecord (1.15.3)
> >>     Implements the ActiveRecord pattern for ORM.
> >>
> >> activesupport (1.4.2)
> >>     Support and utility classes used by the Rails framework.
> >>
> >> cgi_multipart_eof_fix (2.1)
> >>     Fix an exploitable bug in CGI multipart parsing which affects Ruby
> >>     <= 1.8.5 when multipart boundary attribute contains a non-halting
> >>     regular expression string.
> >>
> >> daemons (1.0.5)
> >>     A toolkit to create and control daemons in different ways
> >>
> >> fastthread (0.6.4.1)
> >>     Optimized replacement for thread.rb primitives
> >>
> >> gem_plugin (0.2.2)
> >>     A plugin system based only on rubygems that uses dependencies only
> >>
> >> mongrel (1.0.1)
> >>     A small fast HTTP library and server that runs Rails, Camping, Nitro
> >>     and Iowa apps.
> >>
> >> rails (1.2.3)
> >>     Web-application framework with template engine, control-flow layer,
> >>     and ORM.
> >>
> >> rake (0.7.2)
> >>     Ruby based make-like utility.
> >>
> >> sources (0.0.1)
> >>     This package provides download sources for remote gem installation
> >
> > Hi,
> >
> > form_remote_tag is from the ActionPack, To be able to use it you need
> > to require it somehow, something like:
> >
> > require 'rubygems'
> > gem 'actionpack'
> > require 'actionview/helpers/prototype_helper'
> >
> > (maybe you'll need to prepend lib/ to actionview)
> > and probably you'll need to reference prototype.js from your html pages.
> >
> Thanks for your reply. I am trying out your suggestions, in my case I
> believe it's lib/actionview/helpers/prototype_helper. But I keep getting
> errors:
> /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> `gem_original_require': no such file to load --
> lib/action_view/helpers/prototype_helper.rb (LoadError)
>          from
> /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
> --- generated code ---
>   require 'rubygems' ; print "\n"
>   gem 'actionpack' ; print "\n"
>   require 'lib/action_view/helpers/prototype_helper.rb' ; print "\n"
>   require 'lib/action_view/helpers/javascripts/prototype.js' ; print "\n"
> print(( form_remote_tag :url => { :action => 'whet' } )); print "   \n"
> print "Enter your name: "; print(( text_field_tag :name )); print " \n"
> print(( submit_tag "Greet Me" )); print " \n"
> print(( end_form_tag )); print " \n"
> print "<h2 id=\"greeting\" style=\"display: none\"></h2>\n"
> ----------------------
>
> pique.rhtml:

start with:

<% require 'rubygems' %>
<% gem 'actionpack' %>
<% gem 'activesupport' %>
<% require 'active_support' %>
<% require 'action_view' %>
<%= javascript_include_tag `prototype' %>

> <%= form_remote_tag :url => { :action => 'whet' } %>
> Enter your name: <%= text_field_tag :name %>
> <%= submit_tag "Greet Me" %>
> <%= end_form_tag %>
> <h2 id="greeting" style="display: none"></h2>
>
> ls /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/
> active_record_helper.rb  date_helper.rb          form_tag_helper.rb
>         pagination_helper.rb     url_helper.rb
> asset_tag_helper.rb      debug_helper.rb         javascript_helper.rb
>         prototype_helper.rb
> benchmark_helper.rb      deprecated_helper.rb
> java_script_macros_helper.rb  scriptaculous_helper.rb
> cache_helper.rb          form_helper.rb          javascripts
>         tag_helper.rb
> capture_helper.rb        form_options_helper.rb  number_helper.rb
>         text_helper.rb
>
> I've tried both with '.rb' and without '.rb', neither one works...
>
> Fei

Now you'd need some more gems possibly (i neede redcloth, bluecloth, etc.)
It should be possible to selectively include only the needed libs. Now
I don't have time to find out. Try yourself.

Jano